#66B7EE#66B7EE

#66B7EE is a light, moderate cyan. Relative luminance 0.429; OKLCH L 75.0% C 0.113 H 240.2°. Best body text is #000000 at 9.57:1 contrast (WCAG AA passes).

Color values

HEX	#66B7EE
RGB	rgb(102, 183, 238)
HSL	hsl(204, 80%, 67%)
HSV	hsv(204, 57%, 93%)
CMYK	cmyk(57.1%, 23.1%, 0%, 6.7%)
CIE-LAB	lab(71.46, -9.16, -34.90)
CIE-LCH	lch(71.46, 36.08, 255.29°)
OKLab	oklab(74.98% -0.0559 -0.0977)
OKLCH	oklch(74.98% 0.113 240.2)
XYZ	xyz(37.8399, 42.8614, 87.1513)
Luminance	0.4286 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66B7EE #EE9D66

analogous

#66EEE1 #66B7EE #6673EE

triadic

#66B7EE #EE66B7 #B7EE66

tetradic

#66B7EE #E166EE #EE9D66 #73EE66

square

#66B7EE #E166EE #EE9D66 #73EE66

split-complementary

#66B7EE #EE6673 #EEE166

monochromatic

#167DC4 #2F9DE8 #66B7EE #9DD1F4 #D4EBFA

Accessibility & contrast

On white

2.19

#66B7EE on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.57

#66B7EE on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66B7EE

9.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66B7EE	#FFFFFF	#000000	##000000
##66B7EE	1.00	2.19	9.57	9.57
#FFFFFF	2.19	1.00	21.00	21.00
#000000	9.57	21.00	1.00	1.00
##000000	9.57	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9EB7F1

Deuteranopia (green-blind)

#8CA9ED

Tritanopia (blue-blind)

#00C5CA

Achromatopsia (no color)

#AFAFAF

Design tokens & code

CSS

--color: #66b7ee;
/* rgb */ color: rgb(102, 183, 238);
/* oklch */ color: oklch(75.0% 0.113 240.2);

Tailwind

colors: {
  custom: {
    50: '#9bccf3',
    500: '#66b7ee',
    950: '#000000',
  },
}

SCSS

$custom: #66b7ee;
$custom-light: #9bccf3;
$custom-dark: #000000;

JSON

{
  "hex": "#66b7ee",
  "rgb": {
    "r": 102,
    "g": 183,
    "b": 238
  },
  "hsl": {
    "h": 204.265,
    "s": 80,
    "l": 66.667
  },
  "oklch": {
    "l": 0.74978,
    "c": 0.11256,
    "h": 240.2
  },
  "luminance": 0.42865
}

Semantic roles & 50–950 ramp

primary

#66B7EE

secondary

#EED4C2

accent

#5F09DC

background

#FAFCFE

surface

#F4F8FD

border

#CED1D5

text

#0F1317

muted

#7F8285

Preview Lab

Preview with #66B7EE

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →